package com.topideal.supplychain.hades.util;

import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;

import javax.imageio.ImageIO;

import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;

public class Base64ForJpgUtil {

	// base64码生成图片流
	public static InputStream GenerateImage(String imgStr) throws IOException {
		InputStream sym = null;
		try {
			BASE64Decoder decoder = new BASE64Decoder();
			// Base64解码
			byte[] bytes = decoder.decodeBuffer(imgStr);
			for (int i = 0; i < bytes.length; ++i) {
				if (bytes[i] < 0) {// 调整异常数据
					bytes[i] += 256;
				}
			}
			// // 生成jpeg图片
			// OutputStream out = new FileOutputStream(imgFilePath);
			// out.write(bytes);
			// out.flush();
			// out.close();
			sym = new ByteArrayInputStream(bytes);
		} finally {
			if (sym != null) {
				try {
					sym.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
		}
		return sym;
	}

	// 将图片文件转化为字节数组字符串，并对其进行Base64编码处理
	public static String GetImageStr(String imgFilePath) {
		byte[] data = null;
		// 读取图片字节数组
		try {
			InputStream in = new FileInputStream(imgFilePath);
			data = new byte[in.available()];
			in.read(data);
			in.close();
		} catch (IOException e) {
			e.printStackTrace();
		}

		// 对字节数组Base64编码
		BASE64Encoder encoder = new BASE64Encoder();
		return encoder.encode(data);// 返回Base64编码过的字节数组字符串
	}
}
